摘要
为了分析不同卫星星历对天顶对流层延迟估计的影响,本文选取不同的卫星星历产品分别进行静态精密单点定位试验,估计天顶对流层延迟,并与IGS发布的天顶对流层延迟产品相比。结果表明,采用最终星历、快速星历和超快星历实测部分时,天顶对流层延迟的平均RMS值分别为4.5mm、4.3mm和4.6mm,估计精度一致。而采用超快星历外推部分时,平均RMS值为6.3mm,估计精度略低。
In order to analyze the influence of different kinds of satellite ephemeris products on the estimation of zenith tropospher- ic delay in precise point positioning, different satellite ephemeris products were tested respectively in static to estimate zenith tropo- spheric delays in the paper, which were compared with the products of IGS zenith tropospheric delay then. The results showed that the zenith tropospheric delay estimation accuracy with final ephemeris is consistent with rapid ephemeris and ultra-rapid ephemeris （ob- served half）. The mean RMS values were 4. 5mm, 4. 3mm and 4. 6mm, respectively. While, the mean RMS value of zenith tropo- spheric delay with ultra-rapid （predicted half） ephemeris was 6. 3mm, which is slightly lower.
出处
《测绘科学》
CSCD
北大核心
2013年第2期19-21,共3页
Science of Surveying and Mapping
基金
辽宁省高等学校优秀人才支持计划资助(LR201018)
辽宁省自然科学基金资助(201102087)
国家测绘局测绘基础研究基金资助项目(10-01-03)
精密工程与工业测量国家测绘地理信息局重点实验室开放基金(PF2012-8)
关键词
卫星星历
天顶对流层延迟
参数估计
精密单点定位
精度分析
satellite ephemeris
zenith tropospheric delay
parameter estimation
precise point positioning
accuracy analysis
